Plier type fastener driving device



June 29, 1954 H. RUSKIN ET AL 2,682,053

PLIER TYPE FASTENER DRIVING DEVICE Filed Aug. 25 1951 3 Sheets-Sheet lrlllrlla 1 I. I: #22 J7 J2 4 2 ATTO R N EY June 29, 1954 H. RUSKIN ET ALPLIER TYPE FASTENER DRIVING DEVICE 3 Sheets-Sheet 2 Filed Aug. 25

HEN/FY RUSK/N BY 1545/4 ZACH/IRK/W ATTORNEY Q E E E E E i E E RE! i.w.ill m%.if iui w. Z E. a3

ii i i ME K N QR v Q m\ EMHQQQ Wmw M E E June 29, 1954 H. RUSKIN ETALPLIER TYPE FASTENER DRIVING DEVICE 3 Sheets-Sheet 5 Filed Aug. 25, 1951Patented June 29, 1954 PLIER TYPE FASTENER DRIVING DEVICE Henry Ruskin,Bayside, and Basil Zacharkiw, Jamaica, N. Y., assignors to SpeedProducts Company, Inc., Long Island City, N. Y., a corporation of NewYork Application August 23, 1951, Serial No. 243,242

13 Claims.

This invention is direr ted to an improved plier wherein a swingablecover is normally held removably interlocked with a companion staplereceiving open top magazine and wherein full access may be had to thestaple receiving channel of the open top magazine upon swinging thecover rearwardly away from the staple guideway communicating with and atthe front part of the channel and wherein the cover and magazine as wellas the anvil carrying base utilize common fulcrum means traversing therear ends thereof to permit tiltable or hinged displacement of themagazine relative to the base and swingable movement of the cover toeither fully open or close the magazine. One object of the invention isrealized in interposing the hingedly associated cover, magazine andbase, between a staple ejecting plunger in the form of a hollow cap anda spring controlled rocka'ble handle normall unlocked from the plungerarm to permit the latter to swing rearwardly and bodily carry therewiththe cover to fully open the magazine to ren der the staple channelcompletely accessible. Another important object resides in the provisionof spaced wings on the manipulatable handle, normally unlocked fromspaced posts carried by the plunger arm but instantly effective tointerlock therewith upon rocking of the handle towards the base forinitially shifting the latter against the vertical staple ejectingguideway of the magazine and subsequently but on the same actuatingstroke of the handle shifting the plunger arm downwardly relative to themagazine and base for expelling the foremost staple of the staple stripin the magazine out of the latter and against the anvil for securingsuitable sheets of material previously positioned on the anvil. Otherimportant functional and structural featues of the invention will apearfrom the following detailed specification taken with the accompanyingdrawings wherein:

Fig. 1 is a side view of the plier according to my inventionillustrating the manipulatable or rockable handle unlocked from thestaple plunger arm to permit the latter to be grasped, swung rearwardly,and carry with it the cover for the magazine to provide full access tothe staple channel of the latter.

Fig. 2 is a side view of Fig. 1, shown partly broken away and insection, and further illustrating the plunger arm together with thecover swung rearwardly to fully open the magazine.

Fig. 2A is a plan view of the opened plier taken on the line 2A2A ofFig. 2.

Fig. 2B is an enlarged side View taken on the line 2B-2B of Fig. 2A.

Fig. 3 is a view similar to Fig. 1 but showing the manipulatable handlerocked to interlock with the plunger arm prior to depressing the latter.

Fig. 4 is a View similar to Fig. 3 however showing the pivoted baselifted against the magazine after the handle has been further actuated.

Fig. 5 is a view along the lines of Fig. 4 but exhibiting the plungerarm depressed relative to the cover, magazine and base at the completionof the actuating stroke by the operator on the tiltable or rockablehandle.

Fig. 6 is a transverse sectional view on the line 65 of Fig. 2.

Figs. 7, 8, '9 and 10 are transverse sectional views of Fig. 1 taken onthe lines ll, 28, -B, and l lll 0 respectively.

Fig. 11 is a perspective view of the plier.

Fig. 12 is a rear perspective View of Fig. 11, illustrating the plungerarm broken away.

Fig. 13 is a fragmentary plan view of Fig. 12, showing the cantileverleaf spring anchored to the rear end of the cover.

Fig. 14 is an elevational View taken on the line M-Hi of Fig.5.

Fig. 15 is an enlarged sectional view on the line |5l5 of Fig. 5.

Fig. 16 is a perspective View of the ribbed cantilever leaf spring whichnormally holds the plunger arm elevated.

Fig. 17 is a sectional view on the line l'l|l of Fig. 16.

Fig. 18 is a sectional view on the line l8-l8 of Fig. 3.

Fig. 19 is a fragmentary perspective view of the plier, specificallyillustrating one of the shiftable fulcrum pins of the rockabl-e handleat the lowest part of its relief slot of an associated side wall of theswingable base in the normal fully diverged relation of the handle anddepressible plunger arm, and

Fig. 20 is a sectional view on the line zit-20 of Fig. 2.

In the drawings, the plier is generally designated P, and comprises, theopen top staple receiving magazine M, the cover C, plunger arm PG, baseB, and the loosely mounted rockable handle H.

Magazine or staple receiving arm M appropriately carries the fixed railR (Fig. 2A) on which the staple strip S is slidably guided towards thestaple guideway l0 (Fig. 2). A slida'bly guided follower F is mounted onthe rail to shift the staple strip S towards the guideway [0.

Cover C embodies spaced sides ll (Figs. 2A and 12) having at its rearends spaced ears l2 piv- 3 otally retained on fulcrum pin F. Ears I3 ofspaced sides It of magazine M are also pivotally mounted on fulcrum pinF and movably and closel straddle spaced ears I2 of cover C.

Upstanding sides it at the rear part of the base B straddle ears iii ofthe magazine and are also pivotally mounted on fulcrum pin F.

Rear portions l6 of spaced sides ll of the depressible plunger arm PGare likewise pivotally' mounted on fulcrum pin F and. swingably butclosely straddle the upstanding sides lof base B.

Disposed transversely of cover C is a shiftable pin 3!! having reducedportions 2| (Figs. 2A and 2B), loosely positioned in the spaced enlargedopenings 22 in the spaced sides I l of the cover.

Trained over and looped about pin is'the helicoidal spring LS having theend of its lower leg 23 appropriately retained by lug 24 0f thevslidably retained follower FW while the end upper leg 25 is suitablyanchored to a projection 26 extending downwardly from the rear end ofthe cantilever spring L hereafter more particularly described.

By the arrangement disclosed the slidably retained follower FW movesrearwardly when the cover is swung rearwardly (Figs. 2 and 2A),thusfully exposing the inside guide channel SC defined by the walls ofmagazine M and rail R, permitting convenient insertion of an entirestaple strip S through the open top of the magazine and into the stapleguide channel. This channel SC of course communicates with the frontstaple guideway Iii as is well understood.

Plunger arm PG is a one piece sheet metal cap embodying top wall(SB-from which depends the front wall 3i merged with depending sides I!having their rear inwardly offset portions l6 pivoted on fulcrum pin F.

Anchored by spaced rivets 33 (Fig. 1 to the inside surface of top wall301s the branch 34 which is substantially normal to. and integral withthe staple driving blade 35 provided with the vertical slot 36, thespaced vertical sides of which are guided by the reduced portion 3'! ofthe T-shaped lug 38 projecting from the bent spacer 39 (Fig. 2B)efiectively interposed between and anchored to the spaced sides ii ofthe swin able cover C, sides i i being normally spacedfrom the topwall'EG of plunger arm PG (Figs. 1, 2 and 3) to allow pivotaldisplacement of the plunger arm relative to the cover and magazine whenboth of the latter are locked in a manner hereinafter more particularlypointed out.

Leaf. springL has its front free end id-sloping upwardly and forwardlyto cooperate with the underface of top wall 3% ofthe plunger arm PG(Fig. 12) to normally hold the latter raised and the staple drivingblade 35 above the staple guideway ill receiving the foremost staple of.a staple strip S.

The intermediate portion 41 (Fig. 2) of spring L abuts top Wall 42 ofcover C and part of this spring to the rear of the interconnecting topwall or stop 52 is arched over and seated against the inwardlyoverhanging-flanges :33 extending. from the spaced sides ll of the coverwhich also embodies at the rear end thereof the inwardly turned flanges44 including detents 45 projecting into andinterlockingwith notch-es 46interrupting the rear end portionof spring L to hold the latter in placeagainst longitudinal displacement. For stiffening purposes,- spring L isprovided with rib 48 along its central portion.

Interrupting the forward parts '50 of the spaced sides M oi'themagazine'orstaple containing M are the alined notches 5| having posterior u perparts provided with overhanging cams 52 which act on closing of thecover to shift projections 2| of the floating or loose pin 26 forwardlyagainst the resistance of the looped spring LS. However on completion ofthe closing action, projections 2! are at the bottom of notches 5| butunder cams 52 due to the recoil of spring LS, thereby holding the coverand magazine interlocked and of course closed at which time sides IQ ofthe magazine closely straddle sides H of the cover and the T-shaped lug38 (Fig. 18) is seated against the lower stop wall 53 (Figs. 2 and 14)of dovetail'shapedrecess 54 interrupting the spaced inwardly turnedflanges 55 constituting the front wall of the magazine. Inclined lips 56(Figs, 2 and 18) cam blade 35 into staple guideway I0 when the plungerarm is depressed relative to the cover and magazine.

Spaced upstanding wings W of the rockable or pivoted handle I-I closelybut movably straddle the upstanding spaced sides iii of base B (Fig. 9)and depending sides ll of the plunge arm or cap PG closely but movablystraddle the spaced wings W but widel straddle the spaced sides I l ofcover C.

Spaced sides 15 of base B are provided with transversely alined reliefslots 66. Cylindrical posts GI are anchored to and inwardly overhang thespaced wings W of the handle H. Postsiil ride in relief slots iii)to-constitute a loose connection.

A compressible helicoidal spring 62 (Fig. 1) is housed within hollowhandle H and has its ends 63 and 8 3 retained by appropriate hooks and63 extending from the lower Wall 61 of base B and lower wall 68 of thehandle respectively. Spring 62 in the most widely diverged relation ofthe handle and-base is expanded, thus holding anterior lip 7i] againstbase B at which time it is important to observe that the spaced wings W(Fig. 1) are'iree and clear of the transversely alined and spaced-pinsor posts ll of the plunger arm PG. More specifically these posts areappropriately anchored to the inside faces of the spaced depending sidesH of the plunger arm.

Spaced and upstanding wings W of the rotatable or roclrahle handle H areprovided with alined and reentrant notches 12 adapted to receive andinterlock with the spaced and fixed pins or posts "ii of the plunger armto pivotally depress the latter at a time when the cams or noseportionslii are bearing down and driving postsll. Normally, however,helicoidal spring E32 acts to maintain wings W of handle H unlocked frompins H of the plunger arm, and' the handle is widely separated fromtheplunger arm (Fig. 1). Sides ll of the plunger arm may be manuallygrasped and swung: rearwardly (Fig. 2A). Consequently, cover C. is alsoswung rearwardly since it is bodily carried by the plunger arm. Itfollows thatiull accessmay now be had to the staple receiving channelSCof the mag.- azineto permit dropping into andload the latter with a.staple strip- S. Thereafter the plunger arm is swungtowards'the'magazine and sides H of the cover becomenested betweensides' M of the magazine and eventuallyprojectiona 2| of: the shiftablepin 20 strike: thev spacedcams 52-to bemoved forwardly and on completionof theclosing' action; projections 21- due tothe re lease of spring LSfall under to-interlock with these cams. The cover is now lockedagainstam cidental opening; However towards the completion of theclosing action" of thecover, spaced posts ll of the plunger arm clearcams '13 and are disposed contiguous to the lower faces M of the alinednotches 12 at which time lip 10 of handle H due to the action of spring62 bears against base B, thus the latter serves as a stop to limitdivergence of the handle away from the base.

Briefly recapitulating, normally spring 62 pivotally retracts handle Huntil lip It! strikes base B at which time as previously stated thespaced cams or noses 13 are free of, that is, unlocked from the drivenand spaced posts H of the plunger arm (Fig. 1). Also the shiftable andspaced pins 6| carried by wings W of the handle are now at the lowestparts of the alined relief slots til in the spaced side walls l of thebase. Spring 52 also automatically retracts the pivoted base to providemaximum divergence between anvil A and the magazine. This relationshipis also shown in Fig. 1 wherein the plunger arm is unlocked from thepivoted handle H although the reduced portions 2| of pin 20 of cover Care interlocked with spaced sides 50 of the magazine M. Now by graspingsides I! of the plunger arm and lifting upwardly, both the plunger armand cover C can be bodily swung rearwardly relative to the magazine M(Fig. 2A) for loading the latter with a strip of staples or to remove aclogged staple. Subsequently plunger arm PG and cover C are swungtowards the magazine or staple containing arm M. Projections 2i strikecams 52 to tension loop spring LS and on complete closing of the coverthese projections are held under these cams due to the recoil of springLS.

Manual pressure on the handle in a direction towards base B causes thehandle to pivot or rock and instantly pins 6! ride upwardly in thealined relief slots 60 of the base to be against the upper ends of theseslots which constitute fulcrum means for these pins. By such actionwings W of the handle have shifted from their positions shown in Fig. 1to their positions illustrated in Fig. 3, namely, with the alined slots72 thereof receiving the spaced posts H of the plunger. Furtheractuation of the handle in this same direction causes base B to bepivotally shifted towards the magazine to position the anvil A thereofagainst the magazine M (see Fig. 4). It should be realized that up tothis time plunger arm PG has been idle, that is, it has not been pivoteddownwardly relative to the magazine, cover and base but such actiontakes place only after the anvil has reached the magazine. This isaccomplished on the completion of the operating stroke on the part ofthe operator and almost instantly as the spaced cams or lips '13 ofwings W drive the spaced posts H downwardly, thereby causing the plungerarm to likewise pivot downwardly but only after the anvil contacts thebase (Fig. 5). It is therefore apparent that the driving blade 35 meetsthe foremost staple of the strip and drives this staple against theanvil to clinch suitable material (not shown) previously mounted on thebase. Hence the operating stroke of the pivoted handle has two importantphases. In the first phase, the base is moved automatically to place theanvil against the magazine. In the second phase, the plunger arm issubsequently and automatically actuated relative to both base B and thepivoted intervening arm constituted by magazine M and its companioncover C. This operation, that is, these successive stages take placealmost instantly when the operator manually squeezes the 6. pivotedhandle towards the base and at the same time grasping the depressibleplunger arm. Upon release of manual pressure on the handle and plungerarm, helicoidal spring 52 and leaf spring L release their energy.Therefore spring 52 r tracts the handle H and base B while the biasedportion 40 of spring L causes the plunger arm to be automaticallyelevated. The plier is now fully open and again the spaced pins 6! areat the lowest parts of the relief slots Gil in the spaced sides [5 ofthe base.

Inwardly overhanging spaced detents 30 (Figs. 1, 2, 12 and 19) arestruck out of the upstanding spaced sides 55 of base B and cooperatewith the lower walls of alined recesses 8| interrupting sides is of themagazine to prevent accidental upward pivotal displacement of themagazine out of the base but this may be accomplished by deliberatelyforcing the magazine M by these detents.

Various changes may be made in details of construction and arrangementof parts without departing from the spirit of the invention orsacrificing any of the advantages thereof inherent therein.

We claim:

1. In a plier, a manipulatable handle embodying at its forward end a lipand having upstanding and spaced wings including upper portions providedwith aligned cam means and aligned notches disposed below said cammeans, an anvil, a base carrying said anvil and interposed between saidwings and seated on said lip, said base having upwardly extending spacedsides including aligned relief slots, pins anchored to said wings andmovably arranged in said slots, a staple receiving magazine interposedbetween said upwardly extending sides, a depressible plunger armcarrying a blade for expelling a staple out of said magazine and havingdepending sides removably straddling said wings and upstanding sides,aligned and spaced posts carried by said depending sides and normallyout of said notches and free of said cam means when said depending sidesstraddle said wings in the superimposed and closed relation of saidplunger arm over said magazine, a cover bodily carried by said plungerarm and removably receivable within said magazine, a staple drivingblade carried by said plunger arm, means removably locking said coverand magazine; means common to said base, magazine, cover, and plungerarm and traversing the rear ends thereof for pivotally retaining saidcover, magazine and plunger arm relative to said base, and spring meansinterposed between said handle and base to hold the latter normallyretracted and against said lip and concomitantly arrange said cam meansout of the path of movement of said posts to permit bodily pivotaldisplacement of said plunger arm and cover away from said magazine.

2. The plier according to claim 1 wherein said spring means normallyurges said handle away from said base and against said lip at which timesaid pins are disposed at the lower parts of said slots.

3. The plier according to claim 2 wherein upon manipulation of saidhandle in a direction towards said base, said pins are moved to theupper ends of said slots concomitantly interlocking the sides of saidnotches with said posts preparatory to shifting said base towards saidmagazine and said anvil against said magazine.

4. The plier according to claim 3 in that said posts after interlockingwith the walls of said notches pivotally depress said plunger arm towards said cover, magazine and base and upon further manipulation'ofsaid handle towards said: base butonly after engagement of said anvilwith said magazineshifting said blade downwardly in said magazine to.expel the foremost staple: in the latter.

The plier. according to claim 1 further char.- acterized in that saidpins. and slots constitute loose connections between said base andhandle.

6. The plier according to claim-'1 characterized: further that stopmeans is provided on. the upstanding sides of the base to cooperate withthe sides of the magazine to prevent accidental removal of the magazineout of the base.

7. In a plier, a. base, a plunger arm, a staple containing arminterposed between said plunger armand base, means pivotally. connectingthe rear'ends of said base, plunger arm and staple containing arm; ahandle having loose connections with saidbase, posts carried by saidplunger arm, cam means on said handle and spring. means interposedbetween said handle and base to normally hold said cam means out of.path of movement of said posts in the closed position of said plungerarm over said magazine andifor holding said base diverged from saidstaple containing arm and against said handle;

8'. The plierv according to claim '7 wherein on each manipulating.stroke of said handle towards said base the latter tilts towards andagainst said staple containing arm and thereafter said plunger arm tiltsdownwardly towards said staple containing arm and base for expelling theforemoststaple' in said staple containing arm.

9. The plier according claim '7 wherein the handle closelystraddles'the'base,.widely straddles said. staple containing arm, andthe plunger arm widely straddles the staple containing arm and closelystraddles the handle.

10. In a plier, a base, a plunger arm having a staple driving blade, astaple containing arm removably guiding said blade and interposedbetweensaid-plunger arm and base, a cover bodily carried by and withinsaid plunger arm for closing or opening said staple containing arm,means pivotally holding the rear ends of said base, staple containingarm, cover and plunger arm; a U- shaped' handle having upstanding andspac d wings embodying loose connections with said base, spaced postscarried by said plunger arm, said upstanding and spaced wings having cammeans and notches below said-cam means, andihelicoldalspring; meansinterposedbetweensaid handle and base to normally hold said basediverged from said staple containing arm and against said handleconcomitantly positioning said notches substantially clear of said postsand said cam-means out of path of movement of said posts prior to,swinging said plunger arm from its closed position over said magazine toanopen position rearwardly away from said magazine.

11. In a plier, abase having upstanding and. transversely spaced sidesincluding, aligned relief: slots,.aplungerarm having a stapledrivingblade, a staple containing arm removably' guiding, said blade andinterposed between said plunger arm andbase and straddled by said sides,a cover bodily'carried by and within said plunger armfor. closing. oropening said staple containing arm, means pivotally holding the rearends of said base, staple containing arm, cover and plunger arm;v aU-shaped, handle having upstanding and spaced wings straddling said baseand staple containing arm, spaced pins carried by said wings. andmovablyguided by the walls of said slots, spacedposts carriedby said lungerarm, said upstanding and spaced Wings having cam means and notches belowsaid cam means, and helicoidal spring means interposed between saidhandle andbase to-normally hold said base-diverged from said staplecontaining arm and against said handle concomitantly positioning saidnotches substantially clear of said posts and said cam. means out ofpath of movement of said posts on swingingv said plunger'arrn from itsclosed'position over said magazine to an open position rearwardly awayfrom said magazine.

12. The plier according to claim 11 wherein the staple containing armhas a fully open channel for reception of a complete staple strip upondropping thereof downwardly through the open top' of said arm afterswinging the plunger arm rearwardly and away from said wings.

13; The plier according to claim 12- characterized further in that theplunger arm widely telescopes over the staple containing arm and closelybut removably straddles said wings.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 2,165,572 Pankonin July 11, 1939 2,354,760 Lindstrom Aug. 1,1944

